DIN 267 Mechanical properties for Nuts

Chemical Composition

As per DIN 267-4

ClassC
max.
Mn
min.
P
max.
S
max.
4, 5 and 60.50-0.1100.150
80.580.300.0600.150
100.580.300.0480.058
120.580.450.0480.058

Mechanical Properties

As per DIN 267-4

PropertyClass 4Class 5Class 6Class 8Class 10Class 12
Proof load stress
(N/mm^2)
40050060080010001200
Symbol|4||5||6||8||10||12|
Hardness Vickers HV5
max.
302302302302353353
Hardness Brinell HB
max.
290290290290335335
Hardness Rockwell HRC
max.
303030303636

Class 4 only applies for sizes above M16

Proof Load for Self-Colour or Zinc Nuts

As per DIN 267-4 for typical grades and sizes

Thread sizeClass 8
N
Class 10
N
Class 12
N
M47000875010500
M5114001420017000
M6160002000024000
M8290003650043000
M10460005800069500
M126700084000100000
M16126000157000188000
M20196000245000294000
M22242000303000364000
M24282000353000423000
M27367000459000550000
M30448000561000673000
M33555000694000833000
M36653000817000980000
M397800009760001170000

Nuts with proof load values exceeding 350kN (350 000 N) may be exempted from proof load testing and minimum hardness shall be agreed at the time of purchase.

Proof Load for Hot-Dip Galvanized Nuts with oversize thread

As per DIN 267-10 for typical grades and sizes

Thread sizeClass 8
N
Class 10
N
M61310017100
M82500032600
M104070052900
M126010078100
M16115000150000
M20188000236000
M22236000295000
M24273000342000
M27359000450000
M30440000551000
M33547000685000
M36645000808000

See more in our products section for Nuts, Washers, Springs and other components

Whilst the information is provided in good faith, Andrews Fasteners Ltd are not under any responsibility or liability in respect of errors or information that was found to be incorrect or for any reliance the user may place on it.

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